Update CONFIG_PCIAUTO_SKIP_HOST_BRIDGE to related boards

Remove test for CONFIG_MPC5200 in drivers/pci/pci_auto.c and define
CONFIG_PCIAUTO_SKIP_HOST_BRIDGE in related board configuration files.

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
diff --git a/include/configs/hmi1001.h b/include/configs/hmi1001.h
index 4347625..e5a8897 100644
--- a/include/configs/hmi1001.h
+++ b/include/configs/hmi1001.h
@@ -336,6 +336,7 @@
 #define CONFIG_PCI		1
 #define CONFIG_PCI_PNP		1
 #define CONFIG_PCI_SCAN_SHOW	1
+#define CONFIG_PCIAUTO_SKIP_HOST_BRIDGE	1
 
 #define CONFIG_PCI_MEM_BUS	0x40000000
 #define CONFIG_PCI_MEM_PHYS	CONFIG_PCI_MEM_BUS